Comparison

Black Box vs App Lock & Block App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Black Box

Secure your phone by locking and restricting access to sensitive applications. Protect your private data with advanced password protection and prevent unauthorized app usage or in-app purchases. Enjoy comprehensive digital privacy with an easy-to-use interface.

Highlights
  • App locking with password protection
  • App disappearance for hidden access
  • App usage restrictions
  • Secure privacy with advanced passwords
  • Payment locking for in-app purchases
  • Intuitive interface
Features
Read full description

Black Box: Easily lock and restrict apps, protect your private data with one click. Secure your phone with a password. 100% safe and private! Don't want others to see your privacy? Use our lock and restrict features to keep your apps and data hidden from others. Try this most secure app lock and give your phone 100% privacy protection. 【Key Features】 App Locking: Set password protection for sensitive apps like social media, photo galleries, etc., protecting your privacy anytime, anywhere. App Disappearance: No one but you can find your apps unless you actively reveal them. App Restrictions: Limit app installation, deletion, in-app purchases, control app visibility everywhere, and lock app usage. Secure Privacy: The app lock features advanced security passwords, helping you lock apps and prevent others from casually viewing in-app data. Payment Locking: Lock App Store in-app purchases to avoid accidental payments or prevent your children from buying games. 【Why Choose Black Box?】 100% Safe and Reliable: Uses advanced encryption technology Easy to Use: Intuitive interface design, effortless to get started Comprehensive Protection: Guards your privacy from apps to files Continuous Updates: We constantly improve features to provide you with the best experience Download Black Box now and enjoy true digital privacy! Your encouragement drives our progress! Stay tuned for more powerful features coming soon. If you encounter any issues or have suggestions while using the app, please feel free to provide feedback within the app. blackbox@whohub.cn Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://blackbox.whohub.cn/policy/privacy Use the most reliable app lock to protect your privacy, easily safeguard your digital privacy. Use the app lock to lock apps or protect apps from being discovered, ensuring your security.

About

App Lock & Block App

This app helps you create a private, distraction-free environment by locking and blocking apps. It's useful for parents, students, or anyone wanting to manage screen time and protect sensitive information. Features include scheduled blocking, location-based restrictions, and screen time limits.

Highlights
  • One-tap app locking
  • Scheduled app blocking
  • Location-based blocking
  • PIN-protected settings
  • App install/delete restrictions
  • Screen time limits
  • Parental control features
Features
Read full description

Lockkit – App Lock & Privacy Lock Lockkit is your smart app lock and app blocker solution — perfect for parents. Easily create a private, distraction-free space and lock apps or block apps with just one tap. Whether you need to block apps during study time, limit screen time, or protect sensitive apps before handing your phone to others — Lockkit has you covered.Stay in Control, Anytime, Anywhere 1. One-Tap App Lock Mode – Instantly lock apps to keep your data safe. 2. Scheduled App Blocking – Automatically block apps during bedtime, school, work, or focus time. 3. Smart Geofencing – Block apps based on your location (like school or home). 4. PIN-Protected Settings – Prevent changes and stay in control. 5. App Install & Delete Restrictions – Block unwanted changes, including in-app purchases. 6. Screen Time Limits – Build healthy digital habits. 7. More than Parental Control – A powerful app lock and privacy guard for all users. 8. With Lockkit, your lock screen becomes smarter: protect access, reduce distractions, and customize restrictions with ease. Subscription & Compatibility Compatible with iOS 17.4+ and iPadOS 17.4+ Try Lockkit Premium with a 3-day free trial Available Plans: Weekly Subscription Annual Subscription Lifetime Premium (One-time Purchase) – Payment will be charged to iTunes Account at confirmation of purchase (After free trial period if offered). – Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. – Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. – Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Read Before Using Lockkit Lock Mode Terms of Service: https://www.4digsoft.com/terms-and-conditions.html Privacy Policy: https://www.4digsoft.com/privacy-policy.html Need help? Contact us at support@4digsoft.com

Screenshots

Black Box4 screens
App Lock & Block App4 screens

Verdict

The call

The clearest difference is in-app purchases: Black Box at none against App Lock & Block App's 3. Black Box also leads on update cadence (every 3 days vs every 10 days) and ratings volume (41 vs 2). App Lock & Block App's advantage is review sentiment (100% vs 67%) and rating (5.0 vs 4.7). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. App Lock & Block App sells 3 in-app purchases, starting at $0.99 per 7 days. Black Box asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

App Lock & Block App holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Black Box has 41 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 67% of Black Box's written reviews are positive against 100% of App Lock & Block App's.

UpkeepUpdate frequency

Black Box ships an update every 3 days, App Lock & Block App every 10 days. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

Scorecard6 real differences · 4 level
Black Box versus App Lock & Block App: the parameters behind the verdict, then further details
ParameterBlack BoxApp Lock & Block App
PriceFreeFree
Rating4.7 (41 ratings)5.0 (2 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings41 — better2
Update frequencyEvery 3 days — betterEvery 10 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better17.4
Further details — not scored
Size68 MB20 MB
Age rating4+4+
Developer俊涛 刘4Digsoft

Customer experience

Black Box

All ratings37 ratings
Positive91.9%
Neutral5.4%
Negative2.7%
Written reviews9 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

App Lock & Block App

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Black Box

No in-app purchases

3 purchases

App Lock & Block App

Subscriptions2
  • Lockkit Weekly Subscription$0.997 Days
  • Lockkit Annual Subscription3 Days trial$19.991 Year
One-time1
  • Lockkit Lifetime Premium$29.99

Questions

Is Black Box free?
Black Box is free to download, with no in-app purchases.
Is App Lock & Block App free?
App Lock & Block App is free to download, with in-app purchases available.
Which has better reviews, Black Box or App Lock & Block App?
App Lock & Block App is rated higher. Black Box averages 4.7 out of 5 from 41 ratings, while App Lock & Block App averages 5.0 from 2 ratings.
Do Black Box or App Lock & Block App have ads?
Neither Black Box nor App Lock & Block App shows ads.
Which is updated more often, Black Box or App Lock & Block App?
Black Box ships an update every 3 days, and App Lock & Block App every 10 days. Most recently, Black Box was updated on October 24, 2026 and App Lock & Block App on October 26, 2026.

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